While trying to upgrade from nextcloud 27.1.9 to 28.0.5 (as recommended in admin settings) I have crashed my nextcloud installation. I used the occ manual method and it failed because I was going from one major release to the next but I thought that was OK because it was the next recommended step. My mistake!
I made a backup on 29/4/24 of my data directory, my SQL database and my config file. At this point I was running nextcloud 26.0.13. I misunderstood the ‘backup’ section of the manual and I can see now that I ought to have backed up my ‘themes’ directory and my whole ‘config’ directory. In future I will backup my whole nextcloud directory, my database and my data directory!
Is it possible to ‘go back’ to 26.0.13 with the backup I have? I think it is from what the manual says but I don’t see how to retrieve themes and the rest of the config directory. I still have my nextcloud 27.1.9 directory. If so, what are the basic steps I need to take?
If possible I would like to get to nextcloud 28.0.5. For one thing, I have upgraded to php 8.2 from 8.0. I have php 8.3 ready to go but it is not compatible with nextcloud 27.1.9
Sorry to hear you’re facing problems 
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[/details]
Nextcloud version (eg, 20.0.5): 27.1.9 when last working correctly
Operating system and version: Ubuntu 22.04 server
Apache or nginx version (eg, Apache 2.4.25): Apache/2.4.59 (Ubuntu)
PHP version (eg, 7.4): 8.2 fpm
The issue you are facing:
Is this the first time you’ve seen this error? (Y/N):
Steps to replicate it:
The output of your Nextcloud log in Admin > Logging:
PASTE HERE
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'instanceid' => xxx',
'passwordsalt' => 'xxx',
'secret' => 'xxx,
'trusted_domains' =>
array (
0 => '192.168.xxx',
1 => 'xxx',
2 => 'xxx',
3 => 'fxxx',
4 => 'xxx',
5 => 'xxx',
),
'trusted_proxies' =>
array (
0 => '192.168.xxx',
1 => 'xxx',
2 => xxx',
),
'memcache.local' => '\\OC\\Memcache\\Redis',
'default_phone_region' => 'xx',
'filelocking.enabled' => true,
'redis' =>
array (
'host' => 'localhost',
'port' => xx,
'password' => '',
'timeout' => 0.0,
),
'memcache.locking' => '\\OC\\Memcache\\Redis',
'datadirectory' => '/nextcloud',
'dbtype' => 'mysql',
'version' => '26.0.13.1',
'overwrite.cli.url' => 'http://192.168.xxx/nextcloud',
'dbname' => 'nextcloud',
'dbhost' => 'localhost',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => 'xxx',
'dbpassword' => 'xxx',
'installed' => true,
'theme' => '',
'loglevel' => 2,
'maintenance' => false,
'enable_previews' => true,
'enabledPreviewProviders' =>
array (
0 => 'OC\\Preview\\PNG',
1 => 'OC\\Preview\\JPEG',
2 => 'OC\\Preview\\TIF',
3 => 'OC\\Preview\\TIFF',
4 => 'OC\\Preview\\GIF',
5 => 'OC\\Preview\\BMP',
6 => 'OC\\Preview\\XBitmap',
7 => 'OC\\Preview\\Movie',
8 => 'OC\\Preview\\PDF',
9 => 'OC\\Preview\\MP3',
10 => 'OC\\Preview\\TXT',
11 => 'OC\\Preview\\MarkDown',
12 => 'OC\\Preview\\JPG',
),
'mail_smtpmode' => 'smtp',
'mail_smtphost' => 'xxx',
'mail_sendmailmode' => 'smtp',
'mail_smtpport' => '587',
'mail_from_address' => 'xx',
'mail_domain' => 'xxx',
'mail_smtpsecure' => 'tls',
'mail_smtpauth' => 1,
'mail_smtpauthtype' => 'LOGIN',
'mail_smtpname' => 'xxx',
'mail_smtppassword' => 'xxx',
'app_install_overwrite' =>
array (
0 => 'gpxedit',
1 => 'folderplayer',
),
);
The output of your Apache/nginx/system log in /var/log/____:
PASTE HERE
PASTE HERE
Output errors in nextcloud.log in /var/www/ or as admin user in top right menu, filtering for errors. Use a pastebin service if necessary.
PASTE HERE
